Automatically-operating closed-gap blank-gumming cylinder.



Patented May 22,1917.

i orru a.

M. E. PETERS, G. H. FATH & A. F. MILLER. AUTOMATICALLY OPERATING CLOSED GAP 'BLANK GUMMING CYLINDER.

APPLICATION FILE D.DEC.22| I915- I I III:

, W W N MN M H x W MELVILLE nernrnns, GEORGE 1 rarngaivn ALBERT EQMILLER, or DENVER,

COLORADO;

AUTOMATICALLY-OPERATING Specification of Letters Patent.

CLOSED-GAP BLANK-GUMMIN G CYLINDER.

" Patented'May 22, 1917.

' Application filed December 22, 1915. Serial N 0. 68,272.

To all whom it may concern:

Be it known that we, MELVILLE E. Pn'rnns. GEORGE H. ,FATH, and ALBERT F. MILLER, citizens of the United States of America, residing in the, cityand county of Denver and State of Colorado,have invented a newand useful Automatically -'Op'erating Closed- Gap Blank-Gumming' Cylinder, of which the following'is a specification.

Our invention relates type of blank orlabel gumming cylinder for blank .or label gumming machines; and the objects of our invention are: a 7

To provide a blank gumming roller for blank feeding and gumming machines,having a hinged segment which normally forms part of its peripheral surface, and which is adapted to be'automatically swung inward, therebyto form a gap in said cylinder, said segment when closed hesive material which is supplied to the cylinder from entering the interior of the cylinder. i p I Further, to providea gumming cylinder for blank feeding and gumming machines, which is adapted to receive and gum blanks fed thereto, said cylinder having a hinged segmental strip which normally forms a part of its peripheral surface, and a spring for normally holding said segment in such position, said segment'being adapted to be au tomatically swung in to leave a gap or open ing in the cylinder, and thereby to release or expose the end portion of a: blank carried around by'said cylinder, whereby the said exposed end of said blank may be gripped by suitable mechanism andthe blank removed from thecylinder. v V 1 We attain these objects by the mechanism illustrated in the accompanying drawings, in which: a i Figure 1, is a vertical, longitudinal sectional view of a gumming cylinder constructed in accordance with our invention;

Fig. 2, is an segmentthereof b'eingswung in to form a gap or opening in the periphery of the said cylinder. And g I Fig. 3, is a similar view showing'thesegment inposition to forma cooperating part i of the peripheralsu'rface of the cylinder.

Similar letter of reference refer to similar parts throughout the'several views.

Referring to the drawings,

The numeral 1' designates a blank gumto :a new closed. gap

"length and is preferably 7 diameter.

preventing the -ad the gap and is turned the edge of the blank end view of the same, the

mingcylinder embodying our present invention, which is an improvement over our blank 'gumming cylinder illustrated in our pending application'Serial No. 30,147, filed May 25, 1915, for a-blankgumming machine. ur present gapped cylinder is provided with closed end flanges on its opposite ends on Which'hub portions 2 and 3 are east through the axial'center ofwhich and of the cylinder its supporting shaft 4 extends. This gap gumming cylinder is provided with a gapped opening 5' in its circumferential surface a that extends about two inches wide in a cylinder of about seven inches in This gumming cylinder is preferably made of brass, and on each end flange to one side ofits'shaft hub a boss 6 is 7 true curved part of the circumferential surentirely across its so a facejof thegummingjcylinder, asit is fitted 12and 13 of and machined and finished in a lathe as one integrally surfaced cylinder. 7 v I It is the function ofthis'segment plajteto recede into the interior'of the'cylinder and expose the gap in the cylinder and thus free and expose its edge, inorder that it may be gripped by suitable" finger grippers and be peeled off of the gumming cylinder, as will be scribed. V

Consequently the cooperating edges ofthe gap and also of the segment plate must fit closely enough against each other to prevent any glue from working down into theinterior of the cylinder through the side 7 joints, and yet at the same time the joints must beso formed that the segment plate will move down into the interior of the tightly between the side edges 7 cylinder almost instantaneously at a predepresently de- 7 T of the gap and to each similar edge of the segment plate, a different and special treatment. Thus the edge 13 of the gap is formed with a lower receding step portion which leaves the upper edge in the form of an overhanging lip, and the adjacent engaging edge of the segment plate'is recessed in like manner, the lip 14 of the segment engaging the lip 13 of the gap of the cylinder. This leaves a clearance space between the edge 13 of the gap and the engaging edge 14 of the segment, which insures a tight fit at the surface of the cylinder.

The opposite edge 12 of the gap is provided with an under-cutting lip 15 and receding step portion 16, and the engaging edge 17 of the segment is curved to engage and fit the projecting lip, which moves up against it. The rock arm extensions of the segment permit it to swing inwardly on its pivotal shaft 7, and it is normally held in place against the edges of the gap by an expansive tension spring 23. This spring is mounted on a pivotal stem 19, which is provided with a flat shouldered head portion 20, that is pivotally mounted on a screw bolt 21, which extends through it and the bracket portion of the segment. The stem extends to and loosely through an abutment lug 22, that is pivotally secured to the adjacent end flange. There is one of these pivotal stems and one abutment lug at one end of the segment. The free end of this spring support ing stem works reciprocally and loosely in the lug 22, as the segment moves back into the cylinder and then out again into the gap, at a predetermined point in each revolution of the cylinder, as follows:

The segment is actuated to move into and out of the gap of the cylinder by a grooved cam 24, which is securely bolted by bolts to the inside of the adjacent side frame A. The cam engages a laterally projecting roller 25 that is secured to the free end of the extension rock arm 8 of the segment plate by a stud screw 26. The roller 25 projects beyond the adjacent end of the gumming cylinder into the cam, which is set so that as the gumming cylinder rotates the cam will engage the roller 25 at the proper time, and thus move the segment reciprocally throughout its length and against its spring.

Our present gapped blank gumming cylinder is adapted to be rotated between and work cooperatively with blank feeding and gumming rollers and a blank gripping transmitting and conveying cylinder and conveyer. We do not illustrate however any of these cooperating elements or the mechanism that rotates it, as it can be adapted to any blank gumming machine, and is illustrated in a new combination of blank feeding and gumming rollers and cylinders in our pending application Serial No. 68,270

' cylinder,

filed December 22, 1915, for a cooperating blank feeding and gumming mechanism.

The operation of applying gum to a blank by means of our improved blank guinining cylinder, is as follows:

Our blank gumming cylinder is rotatively mounted and is adapted to be continuously rotated by any suitable mechanism, and it is provided with an operatively regulated adhesive gum distributing mechanism, and it receives blanks or labels from any automatically operating blank feeding roller; that particular roller we have illustrated and described in our pending application Serial No. 68,271 filed December 22, 1915, for a blank and label feeding roller for blank gumming machines is so relatively positioned to the blank feeding roller that it receives the advancing feeding edge of the blank on its segment plate, and as this plate as well as the whole surface of the cylinder is coated with gum, the blank sticks to it and is fed forwardly around and lies against and sticks to the gummed surface of the cylinder as it rotates, the feed roller being arranged to press the blank against the surface of the which causes the blank to feed off from it onto the cylinder. The gumming cylinder carries the blank around with it to a predetermined point in its rotary movement, when the roller at the end of the extension of the rock-arm engages the cam 24-, whereby the segment plate is moved inward and the end portion of the blank which rested on it is released and extends partially over the gap in the cylinder. Instantly thereafter, the exposed end of the blank is caught by automatically operating grippers, carried by an endless conveyer which passes over a transmission cylinder adjoining the gumming cylinder, and the blank is stripped from the gumming cylinder and deposited on the conveyer, whence it is conveyed to a suitable box covering machine. The transmission cylinder and the conveyer with its grippers are not illustrated, as they form no part of the present invention, and are mentioned only to convey an idea of how the blank is removed from the gumming cylinder. As the blank is stripped from the gumming cylinder, the cam 24 throws the segment 11 out to close the gap in the cylinder, and it is held in this position by the spring 23, until it is again moved inward by the cam to open the gap.

Having described our invention, what we claim as new and desire to secure by Letters Patent, is:

1. A hollow blank gumming cylinder provided with a gap extending throughout its length, and with flanged end portions adapted to axially support a shaft, a shaft secured in said end portions, a segment plate of the same circumferential peripheral curve as said cylinder fitting closely enough into lever on said, plate and its said gap to tightly fill and close the same, a rock shaft mounted within said cylinder parallel to said cylinders supporting sha .t, said segment plate being mounted on said shaft to swing reciprocally from the interior of said cylinder and close or open said gap, a roller provided supporting shaft, means including a grooved cam surrounding said roller for moving said segment into the interior of said cylinder to open said gap, and means including resilient means for moving said segment plate to normally closesaid gap after said gap has being opened a predetermined period of time. p

2. In a blank bination with the side'frames provided with bearings, of a shaft rotatively mountedon said'bearings, a hollow blank gummingcylinder comprising porting end flanges secured means for rotating said cylinder, cams secured to'said side frames adjacent to the opposite ends of said cylinder, a gap ex-;

tending across said cylinder, plate curved to register with curvature of said cylinder, at one end portion with an arm, a hub portion on each arm intermediate of its ends, hub bearings formed on said shaft supporting ends of said gapped cylinder, a shaft extending through and hubs of said segment plates and pivotally journaled in the hubs of said cylinders shaft supporting members and extending a segment the same,

across said cylinder and segment plate, and

Copies'ot this patent may be obtained for axial alinement points in each of .nected to said segment at one a shell and shaft. su on said sha and provided .ment to close said gap.

secured to the five cents each, by Washington, D. 0.

a roller at the end of said arm in engagement with the adjacent cam of said supporting frame. H

3. In a blank gumming cylinder, the combination of the gumming cylinderprovided with flanged end portions at its opposite end portions, the segment plate closely fitting in and fitting said gap, said segment plate being provided with rock annmembers at its opposite end portions pivotally secured iin with said cylinders longitudinal axis, the cylinder supporting shaft, the pivotal shaft pivotally connecting said segment to the interior of said cylinder to 'reciprocally move said segment plate to gumming cylinder, the comopen and close said gap at predetermined said cylinders revolutions, the spring supporting pin pivotally con clip in which said pin is reciprocally and slidably mounted, the coiled expansive sprlng mounted on said pin and cam acon the end of said rock arm whereby said segment is moved into said cylinder to open said gap and said spring moves said seg- In testimony whereof we tures 1n presence of two witnesses.

MELVILLE E. PETERS. GEORGE H. FATH. ALBERT F. MILLER.

Witnesses: Gr. SARGENT ELLIOTT, V ADELLA -M. FOWLE.

addressing the Commissioner of Patents,

rotatable gapped blank afiix our signa- 5 end, the guide J -tuated means including a roller mounted 

